Spool



Oct- 30, 1951 R. P. PERRY ET AL 2,573,598

sPooL l Filed Jan. s. 195o .al i,

FIGI 9 Patented Oct. 30, 1951 2,573,598 'sPoon 'Ray Potter Perry, Laaue,Edwin Albert Diekmann,- St. Louis, 'and Loren Farquhar Bridge, Kirk-vwood, Mo., 'assignors to Bemis Bro. Louis, Mo., a corporationApplication Januar;v1 3, 1950, Serial ol13'6`55..

8 Claims.' (Cl. 242;]25y

` 'This invention relates to spools and more particularly to woodenspools such as Aare used on the spindles `of twisting apparatus.

Wooden spools of Ithe class described usually consist of a Wooden barrelhaving Wooden heads at both ends, with a metal drive bushing at the'vlower end of the spool for'receiving the usual driving member onaftwistery spindle. One of the features of this invention is theprovision of a yarn tail retainer for such a spool mounted on the lowerend of the spoolnwhich isv adapted to withstand the severe usage 'to`which such spools are subjected and which is readily assembled with thespool proper. In general, a tail retainer of this invention is made ofrubber or the like and has a yarn'lr'eceiving tubular barrel,` a webacross one end'of the barrel, and a'yarnretain ing head at the other endofthe barrel.4 The tail retainer is mounted r`with its web bearingagainst the end of the spool v,coaxial with the spool barrel. A metaldrive bushing is xed inthe end of the spool barrel, the bushing having atube extending through an opening in the web of the tail retainer and aflange Within the tail retainer barrel bearing against the web to holdthe tail retainer on the spool. `Another feature of the invention isthevprovision of a shield for the periphery of tl'ie' lower head of thespool which is adapted lnot only'to protect the lower head from damagebut also to prevent the loop of yarn which extends overl the rim ofthelower head from the tail retainer to the barrel of the spool fromprecessing around the head during` the operation of winding the yarn onthe spool. v

In general, a'shieldV ofy this'invention comprises a metal collar'fittedon lthe periphery of the -head and having a ring of rubber or the likemolded on its outer periphery. Other features will be in part apparentand in part pointed out hereinafter.

'The 'invention accordingly comprises the elements and combinations ofelements, features of construction, and arr-angements of parts` whichWill be exemplied in the structures'hereinafter described, and the scopeof the application of which will be indicated in the 'following claims.

In the accompanying drawing, in which one of various possibleembodiments of the invention is illustrated,

Fig. 1 is a transverse section through a spool of this invention, takenon line I-I of Fig. 3;

; Fig. 2 is a plan View' of'Fig. 1;

Fig. 3 is a bottom plan view 0f Fig. 1;

;.F1g.;4'is a fragmentary section taken op line 45:14.01` Figa; and o.

'Figl` 5 is a perspectiveview'of atailrtaine per se of this invention,with'parts broken awayv and shown in section. Y 4' i Similar 'referencecharactersY indicate corre?" sponding parts throughout the severalVviews; of the drawing. f l f i" Referring to the drawing... @512091 0f.this vention is showngtocormprise a tubularcylindri-- cal Wooden barrell'havirig reducedfdiamet'er eX-5l ternally threaded `end portions, theupper cndp" tion being designated andthe lowerY endpor-r' tionbeinadesignated 5.- Theebore of vthe barrel. is designated 1., V.Thisha's'wa ,reduced'darrletenr"l section 9 adjacent Ythe upper endofthebarrll and a reducedfdia'meter section II..,at the,lower',` end ofthebarrel. xA bllshing I 3 is lixedvinfthe' reduced-diameter bore sectionV9, its ends` vbei g, spun over the ends of then'sec'tion as indicated;Jatl5. u. ,4'

An annular wooden head ,I1 is threaded on theAv lllper end 3o'fthebarrel."1`his isvheldvl against turning relativevto the barrel bydowelsr I9 driveninto and glued Vin holes 2l boredwath; an angle throughthe headinto thejbarrel. vThe head YI1 isVv providedvvitlxl a metalshield 2,3 enf".

circling its rim. `rAn annular Wooden head25, 'ist threadd'fon'thelowerv end'5 ofthe barrel. is heldagainst turningrela'tive to thebarrelbyy do'wels' 21 '(Fg. il 'driven' into and 'glued in holes" 29bored atan angle through the head interne" barrel'. The hea'd 25is'provi'ded with' a specialr shield' 3|,` this being; one 'ofthefeaturesqfthe" invention' and 'td'beI more particularly described"later. As shown, both the upper sp'o'olhe'ad11 and' the` lower spoolhead 25 are o f' laminated wood construction. Each is shown 'to'c'ons'hi'st'fi4- three woodenplies glued'together. The upper' spoolhead I1 may, as shown, be of smaller diam#-4 eter than the 'lower spoolhead 25 to' facilitate' over-endtakeloii of thefyarn in unwindingf" i" 1After Vthe lower head '25' has been'xed t'th'e'y barrel, itiscounterbored to forma circular'r'e-l" cess 33'coaxial"with'th barrelI. vThis opera-'I tion cuts away part of th'e lower eind of the bar? relso that the flat inner end 35 ofthe recess 3,3`fl is flush with theflatlower'end of the barrel 'I .f A diametricalgroove'31 is thenmilledin the innerl end of the recess and across the" lower end of the"barrel. This groove', as vshown,"is of rectangular' cross section.Alsd'the recess "33`is conically unfj head 25 for receiving a number ofturns of yarn at-the start of Winding onthe spoolto provide Y of suchform and diameter as to t in the coni-fv cally undercut perimeter 39 ofthe recess 33, and:

a lower conical head 41 which may be of greaterdiameter than the head45. At the upper end ofi the barrel 43, the tail retainer is formed witha flat web 49 having a diametiical s101751Y VAcorresponding in outlineto the outline of the groove E can bezshown byan'analysis of the forcesacting 31 milled in the inner end of therecess 33 and. l

across thelower endof the barrel oi' the spool.1 The lower head 41 ofthe tail retainer isiirmed.

on its bottom with yarn'catching teeth 53 for starting the'winding ofyarn on the tail retainer.

The webbed end oi the tail retainer is fitted in the recess 33 with theweb 49 bearing against the, inner end` ofY the recess and with the slot5I aligned with Athe groove 31, and -is held in place by a metal drivebushing 55. This consistsof a v metaltube 51 i'ltted in thereduced-diameter bore section I.with .its upper end spun over on. theupper end of section l Ir as indicated at 59. Inte-V gral with the lowerend of the tube 51 is an outwardly extending flange 6l. formed with adownwardly open diametrical channelV 63 which is continuous across thetube,v Flange 6I is of suchsize astoffit within'the tail retainer barrel`43 underneath and bearing tightly against the bottom of tiieweb 49.-VVvI'he channel 63-iitsA in the slot 5l of the `web and in the groove 31and. opensfdown- Ward to receive the usual driving member ona spindleYof atwisting frame. Y y Assembly of the tail retainer 4I with the spooli'sreadily accomplished Vsimply Vby fitting the upper end of .theretainer in the recess 33 with slot Y5I alignedvwi'th groove 31, drivingin the bushing55 until the flange 6I bears against the webl 49, and thenspinning over the upper end of thedrive bushing vtube 51 at 59. 'Ihetail retainer, being molded of rubber or the like, Vis adapted towithstand the severe-usage to which twister spoolsof this type areusually subjected without-ap p reciable damage due to its resilience.Alse, if made of oil-resistant synthetic rubber, it is resistant todeterioration whichl might otherwise be caused byoil spattering ontheretainer from the twisterframe.

The shield 3| for the lower yhead 25 of the spool comprises a sheetmetal collar 65 of such diameter asf-to yiit tightly on the head andpre-formed with ali-inwardly directed lower' end flange 6T ofchannelshape in cross section. A ring 69v of elastomeric material, Le.,rubber or the like, preferably ani-oil--resistant synthetic rubber suchas neoprene (chloroprene rubber), is molded on the outside of; thecollar. The 'rubber ring 69 is formed f with axial yarn-catching grooves1I spaced at equal intervals around its* periphery. These mayr bemoldedvor milled in the ring.- As shown, there are four such grooves',spaced at 90 intervals. Y The flange 61 of the collar 65 fitsfinanannular lgroove 13V formedin the lower lface` offthe lhead 25 adjacentits periphery. The collar lhas a portion 15-which projects fromwithinthe In winding yarnpn aspeol, agnumber-oi turns.V

y against the web.

of yarn are rst wound on the tail retainer; then the yarn is jumped overthe rim of the lower head 25 and wound on the barrel l of the spoolproper. This forms a loop of yarn leading over rim of the lower headfrom the tail retainer tol the spool barrel. As shown, the diameter ofthe tailretainer barrel 43 is. somewhat larger than thediameter of thespool barrel. I`, though this relationship is not critical. It isevident that :because of the varying number of turns of yarn iirst woundon the tail retainer barrel 43, the diameter of the tail retainer barrelcannot be establishedso that the pitch diameter acting on the `last turnof yarn on the tail retainer will equal the diameter. of the spoolbarrel I. It

,on the loop of yarnleading over the rim of the lower head' from thetail retainer to the spool barrel that this loop will tend to precessabout the lower head in such a manner as to unwind more yarn from thelarger pitch diameter barrel than from the smaller pitchdiameter Abar-`rel. sov that it would no longer fit snugly over the lower head 25v andso that it Wouldbe in dang-er of `being `fouled by other spools, or bypartsl of themachinery. Precessingof the yarn, however,-

is eliminated by 'the provision of the grooved rubber ring on theperiphery of the lower head.

When the yarn is jumped from. the tail retainer i tothe spool barrel,the loop of yarn may catch in one of the grooves in the rubber ring andvthereby be preventedfromprecessing. If the loopA doesv not so catch injumping from the tail re-y tainer to the spool barrel, andif it thenprecesses about thehead, the precessionwould vbe arrestedby the loopscatching in one of the grooves. FEI-1ev grooves in the `rubber, ringumayvnot be essen.-V

tial where the coeiicient of friction between the yarn and the rubberring is sufficiently high Vto prevent precessingr It is thereforecontemplated` that under suitable circumstances,. the rubber ring may beformed without grooves, and. with a completely smooth periphery. Thus,the rub ber ring prevents precessing, and at the same time protects thelower head 25 of `thespool from damage. Being made of Yoil-resistantsyn.l

As many changes could beV made in the above' constructions withoutdepartingfrom the 'scope'Y of vthe invention, it is intended that allmatter.

contained in the above description or shown in the accompanying drawingshall be interpreted as illustrativegand not in a limiting sense. Y

We claim:

l. A spool comprising a'tubular wooden barrel having a wooden head at:one end, and a tail retainer .formed of elastomeric material having ayarn-receiving barrel, a web across one end ofthe tail retainer barreland a yarn-retaining he'ad'at its Vother end, said tail retainer lbeingmounted with its web bearing against saidfend of' the `spfool coaxialwith the spool barreland being held 1in" place by a metal drive bushingcomprising aftube fixed in the end of the spool barrel and extendingthrough an opening in thelweb and' having af ilange within the tail'retainer barrel bearing '-2.A A Vspool comprising Such precession wouldelongate the .loop

armbuiarfwoodep barrer 4having a wooden head at one end,-atail retainerof elastomeric material having a yarn-receiving barrel with a web acrossone end of the barrel and a yarn-retaining head at its other end, saidtail retainer being mounted with its webbed end in a recess in said endof the spool coaxial with the spool barrel, with the web bearing againstthe inner end of the recess and being held in place by a metal drivebushing comprising a tube xed in the end of the spool barrel andextending through an opening in the Web and having a flange within thetail retainer barrel bearing against the web.

3. A spool comprising a tubular wooden barrel, a wooden head at one endof the barrel, a tail retainer of elastomeric material having ayarnreceiving barrel with a web across one end of the barrel and ayarn-retaining head at its other end, said tail retainer being mountedwith its webbed end in a recess in said end of the spool coaxial withthe spool barrel, with the web bearing against the inner end of therecess and being held in place by a metal drive bushing comprising atube xed in the end of the spool barrel having a flange within the tailretainer barrel bearing against the web, the ange being formed with adownwardly opening diametrioal channel adapted to receive a drivingmember on a twister spindle, the channel and the tube extending througha slot in the web and the channel being received in a groove in thespool at the inner end of the recess.

4. A spool comprising a tubular wooden barrel, a wooden head at one endof the barrel, a tail retainer of elastomeric material having ayarnreceiving barrel with a web across one end of the barrel and ayarn-retaining head at its other end, said tail retainer being mountedwith its webbed end in a recess in said end of the spool coaxial withthe spool barrel with the web bearing against the inner end of therecess and being held in place by a metal drive bushing comprising atube lxed in the end of the spool barrel having a ange within the tailretainer barrel bearing against the web, the flan-ge being formed with adownwardly opening diametrical channel adapted to receive a drivingmember on a twister spindle, the channel and the tube extending througha slot in the web and the channel being received in a groove in thespool at the inner end of the recess, the recess being conicallyundercut at its periphery and the tail retainer having a conical head atits webbed end tting in the conically undercut periphery of the recess.

5. A spool comprising a wooden barrel having a wooden head at one end, atail retainer on said end of the spool, and a shield on said headcomprising a metal collar xed on the periphery of the head and having aring of elastomeric material molded on its outer periphery, saidelastomeric ring being formed with grooves spaced at intervals aroundits periphery.

6. A tail retainer for use on a spool to receive a number of turns ofyarn at the start of winding on the spool consisting of a body molded ofelastomeric material in the form of a at bobbin having a relativelyshort tubular cylindrical barrel, a head at one end of the barrel, and aweb across the other end of the barrel, the web having an openingadapted to receive a drive bushing for holding the tail retainer on aspool.

7. A tail retainer for use on a spool to receive a number` of turns ofyarn at the start of winding on the spool consisting of a body molded ofelastomeric material in the form of a iiat bobbin having a relativelyshort tubular cylindrical barrel, a head at one end of the barrel, and aWeb across the other end of the barrel, the web having a diametricalslot adapted to receive a drive bushing for holding the tail retainer ona spool, the head being formed with at least one yarn-catching tooth forstarting the winding of yarn on the tail retainer.

8. A tail retainer for use on a spool to receive a number of turns ofyarn at the start of winding on the spool consisting of a body molded ofoilresistant synthetic rubber in the form of a flat bobbin having arelatively short tubular cylindrical barrel, heads at the ends of thebarrel, and a web across one end of the barrel, the web having adiametrical slot adapted to receive the channel and tube of a drivebushing for holding the tail retainer on a spool, the head at the otherend of the barrel being formed with yarn-catching teeth for starting thewinding of yarn on the tail retainer.

RAY POTTER PERRY. EDWIN ALBERT DICKMANN. LOREN FARQUHAR BRIDGE.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 368,675 Leonard Aug. 23, 18871,852,243 Hubbard Apr. 5, 1932 2,048,995 Clinton July 28, 1936 FOREIGNPATENTS Number Country Date 690,147 France June 10, 1930

